On Sat, 14 Jul 2018 16:59:49 +0100, Chris Green wrote:

> Not unreasonable in terms of the cost to the supplier, no.  However to a
> 'user' (me) it is unreasonable as it costs as much as the Pi!
>
The reason for that is obvious: the RPi and its component parts are all
high volume item with all the economies of scale that implies. Any even
slightly specialist expansion card is neither, so doesn't, of course
attract any economies of scale. Hence the price.

If you want cheap, about the best you can do is look to see if Spark Fun
and similar make something you can adapt (you may need to build the
interface) or grab a proto board, some chips and a soldering iron and get
stuck in.


--
Martin    | martin at
Gregorie  | gregorie dot org

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